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Geography, 30.09.2019 18:30 Jasten

The chandra x-ray observatory must operate in space because:

a) x rays are too dangerous to be allowed on the ground.
b) x rays do not penetrate earth's atmosphere.
c) x-ray telescopes require the use of grazing incidence mirrors.
d) it was built by nasa.

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The chandra x-ray observatory must operate in space because:

a) x rays are too dangerou...
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